MD_DataIdentification

LDEO Carbonate data were compiled under the direction of A. Esmay and W.F. Ruddiman
at the Lamont-Doherty Earth Observatory of Columbia University. Data include CaCO3
percentages by interval down core for 328 sediments cores, principally from the Atlantic
ocean. Data are derived primarily from two sources. First, cores analyzed during the
CLIMAP project to generate stratigraphic control on cores from key deep-sea regions.
Second, cores analyzed using almost entirely National Science Foundation funds, but
through smaller grants to individuals and institutions. On average, cores span intervals
of time of 100,000 to 200,000 years and have been analyzed at time steps of a few
thousand years. Several cores span only the last deglaciation; a few cores cover much
longer intervals, up to 3 million years. Samples are annotated as either bulk sediment,
or fine-fraction. Data are available for free download. Data were originally submitted
to NOAA's National Geophysical Data Center (NGDC) for archive and were subsequently
transferred to NOAA's National Climatic Data Center (NCDC) Paleoclimatology Group
for stewardship.

This page describes the NASA GCMD Keywords, how to reference those keywords and provides
download instructions.

information

1

http://id.loc.gov/authorities/subjects

Library of Congress Subject Headings (LCSH)

The Library of Congress Subject Headings (LCSH) are part of a Linked Data Service,
actively maintained since 1898 to catalog materials held at the Library of Congress.

information

1

http://www.epsg-registry.org/

European Petroleum Survey Group Geodetic Parameter Dataset

Registry that accesses the EPSG Geodetic Parameter Dataset, which is a structured
dataset of Coordinate Reference Systems and Coordinate Transformations.

search

1

http://www.seadatanet.org/Standards-Software/Common-Vocabularies

SeaDataNet Common Vocabularies

The SeaDataNet Vocabulary Server is populated with lists describing a wide range of
entities relevant to marine metadata and data such as parameters, sea area names,
platform classes, instrument types, and so on.